Results 261 to 270 of about 524,603 (302)

Transient Electromagnetic–Thermal Co-Simulation of Microwave/RF Integrated Circuits by the HIE-FDTD Method

IEEE transactions on microwave theory and techniques
In this article, we present an efficient transient electromagnetic–thermal co-simulation solver based on the hybrid implicit–explicit finite-difference time-domain (HIE-FDTD) method.
Kaikun Niu, Wenkai Zhang, Minquan Li, Xingang Ren, Yingsong Li, Zhixiang Huang, Bo Wu, Xianliang Wu, Atef Z. Elsherbeni   +8 more
semanticscholar   +1 more source

Underground and Down-hole Transient Electromagnetic Modelling

Exploration Geophysics, 1987
In recent years, there has been an increasing emphasis in exploration placed on transient electromagnetic (TEM) measurements beneath the surface, to help improve the resolution of small conductive targets beneath complex over­burden, and to enable the detection of targets that cannot be detected with surface methods because of their intrinsic detection
S. K. Lee, G. Buselli
openaire   +1 more source

Modeling and Simulation of ±800kV HVDC Electromagnetic Transients

2020 Asia Energy and Electrical Engineering Symposium (AEEES), 2020
With the dense access of Large-scale high voltage direct current (HVDC), the problem of AC and HVDC interaction is prominent. To ensure the safe and stable operation of AC/DC hybrid power grid, it is necessary to accurately simulate HVDC transient and steady state according to the actual control program.
Weiyuan Wang, Fei Dou, Jinmin Cheng, Xuan Yu, Mengmeng Yang, Qinxin Huang   +5 more
openaire   +1 more source

A thermal-electrical analogy transient model of district heating pipelines for integrated analysis of thermal and power systems

Applied Thermal Engineering, 2018
District heating networks have an ability to store heat to improve the flexibility of power systems, but it lacks a compatible method to analyze thermal and power system together.
Ling Hao, Fei Xu, Qun Chen, Mingshan Wei, Lei Chen, Y. Min   +5 more
semanticscholar   +1 more source

TRANSIENT ELECTROMAGNETIC MONITORING OF THE CRYOLITHOZONE: MATHEMATICAL MODELING

Russian Geology and Geophysics
Abstract ––The paper presents theoretical results on mathematical modeling and numerical inversion of transient electromagnetic data for the monitoring of the state of the cryolithozone. Solutions to the direct and inverse problems are considered based on the vector finite element method, the Sumudu integral transform and the apparatus ...
M.I. Epov, V.N. Glinskikh, O.V. Nechaev, K.N. Danilovskiy, I.V. Mikhaylov   +4 more
openaire   +2 more sources

BP neural network and improved differential evolution for transient electromagnetic inversion

Computational Geosciences, 2020
In the transient electromagnetic (TEM) inversion, the BP neural network method has high efficiency owing to avoid the complicated forward model calculation in every iteration.
Ruiyou Li, Huaiqing Zhang, Qiong Zhuang, Ruiheng Li, Yue Chen   +4 more
semanticscholar   +1 more source

Nonlinear Corona Models in an Electromagnetic Transients Program (EMTP)

IEEE Power Engineering Review, 1983
Corona attenuation and distortion of overvoltage waves is an important factor in determining the overvoltage level inside the electrical system due to atmospheric lightning discharges. Simulation of overvoltage wave propagation in electrical network by digital computers is often used in the electric power industry.1,2 This paper describes the ...
openaire   +1 more source

A Constant-Current Transmission Converter for Semi-airborne Transient Electromagnetic Surveying

IEEE transactions on industrial electronics (1982. Print), 2020
In complex terrain, semi-airborne transient electromagnetic surveying can effectively solve the detailed exploration problems to replace ground manual operation.
Zhi Geng, Lihua Liu, Jutao Li, Fubo Liu, Qimao Zhang, Xiaojun Liu, G. Fang   +6 more
semanticscholar   +1 more source

Induction Machine Modelling for Electromagnetic Transient Program

IEEE Transactions on Energy Conversion, 1987
A method is presented by which an accurate dynamic induction motor model may be developed from a knowledge of standard specification data for the motor. The incorporation of the model into the Electromagnetic Transients Program (EMTP) is described. Examples are given of its use in the study of the starting performance of a large induction motor and of ...
G. J. Rogers, D. Shirmohammadi
openaire   +1 more source

Multirate Modeling Scheme for Electromagnetic Transients Calculation

IEEE Transactions on Power Delivery, 2004
In this paper, a multirated scheme based on filter banks is proposed for networks modeling in electromagnetic transient calculation. The basic idea is to convolve in the sub-bands using models of different complexity for the lowand high-frequency range in order to reduce the overall computational complexity.
H. Zini, G. Ratta
openaire   +1 more source